diff options
Diffstat (limited to 'src/com/android/launcher3/util/LooperExecutor.java')
-rw-r--r-- | src/com/android/launcher3/util/LooperExecutor.java | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/com/android/launcher3/util/LooperExecutor.java b/src/com/android/launcher3/util/LooperExecutor.java new file mode 100644 index 000000000..5b7c20bbf --- /dev/null +++ b/src/com/android/launcher3/util/LooperExecutor.java @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License + */ +package com.android.launcher3.util; + +import android.os.Handler; +import android.os.Looper; + +import java.util.List; +import java.util.concurrent.AbstractExecutorService; +import java.util.concurrent.TimeUnit; + +/** + * Extension of {@link AbstractExecutorService} which executed on a provided looper. + */ +public class LooperExecutor extends AbstractExecutorService { + + private final Handler mHandler; + + public LooperExecutor(Looper looper) { + mHandler = new Handler(looper); + } + + @Override + public void execute(Runnable runnable) { + if (mHandler.getLooper() == Looper.myLooper()) { + runnable.run(); + } else { + mHandler.post(runnable); + } + } + + /** + * Not supported and throws an exception when used. + */ + @Override + @Deprecated + public void shutdown() { + throw new UnsupportedOperationException(); + } + + /** + * Not supported and throws an exception when used. + */ + @Override + @Deprecated + public List<Runnable> shutdownNow() { + throw new UnsupportedOperationException(); + } + + @Override + public boolean isShutdown() { + return false; + } + + @Override + public boolean isTerminated() { + return false; + } + + /** + * Not supported and throws an exception when used. + */ + @Override + @Deprecated + public boolean awaitTermination(long l, TimeUnit timeUnit) throws InterruptedException { + throw new UnsupportedOperationException(); + } +} |